l3k Bowden extruder

This is a remix of the original L3K extruder for 1.75mm filament. I liked it so much on my i3 that I wanted a bowden version for my CoreXY setup. This was designed to mount up to a 2020 extrusion. There are two adapters, an 8mm and 10mm. To use this properly you will need a bowden tube connector that will allow the tube to go straight through; or you can drill out one that does not. There is also a 4mm inlet on the intake side for a bowden tube. The remaining files can be used from the original Thing, and I recommend the belt version rather than gears.